CVE-2012-0876 Information

Description

The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash collisions predictably which allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML file with many identifiers with the same value.

Reference

http://bugs.python.org/issue13703msg151870 http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html http://mail.libexpat.org/pipermail/expat-discuss/2012-March/002768.html http://rhn.redhat.com/errata/RHSA-2012-0731.html http://rhn.redhat.com/errata/RHSA-2016-0062.html http://rhn.redhat.com/errata/RHSA-2016-2957.html http://secunia.com/advisories/49504 http://secunia.com/advisories/51024 http://secunia.com/advisories/51040 http://sourceforge.net/projects/expat/files/expat/2.1.0/ http://sourceforge.net/tracker/?func=detail&atid=110127&aid=3496608&group_id=10127 http://www.debian.org/security/2012/dsa-2525 http://www.mandriva.com/security/advisories?name=MDVSA-2012:041 http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html http://www.securityfocus.com/bid/52379 http://www.ubuntu.com/usn/USN-1527-1 http://www.ubuntu.com/usn/USN-1613-1 http://www.ubuntu.com/usn/USN-1613-2 https://support.apple.com/HT205637 https://www.tenable.com/security/tns-2016-20